src/surf/cpu_cas01.cpp

   1 /* Copyright (c) 2009-2011, 2013. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "cpu_cas01.hpp"
   8 #include "cpu_ti.hpp"
   9 #include "plugins/energy.hpp"
  10 #include "maxmin_private.hpp"
  11 #include "simgrid/sg_config.h"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
  14                                 "Logging specific to the SURF CPU IMPROVED module");
  15
  16 /*************
  17  * CallBacks *
  18  *************/
  19
  20 static void parse_cpu_init(sg_platf_host_cbarg_t host){
  21   ((CpuCas01ModelPtr)surf_cpu_model_pm)->parseInit(host);
  22 }
  23
  24 static void cpu_add_traces_cpu(){
  25   surf_cpu_model_pm->addTraces();
  26 }
  27
  28 static void cpu_define_callbacks()
  29 {
  30   sg_platf_host_add_cb(parse_cpu_init);
  31   sg_platf_postparse_add_cb(cpu_add_traces_cpu);
  32 }
  33
  34 /*********
  35  * Model *
  36  *********/
  37 void surf_cpu_model_init_Cas01()
  38 {
  39   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  40
  41   xbt_assert(!surf_cpu_model_pm);
  42   xbt_assert(!surf_cpu_model_vm);
  43
  44   if (!strcmp(optim, "TI")) {
  45     surf_cpu_model_init_ti();
  46     return;
  47   }
  48
  49   surf_cpu_model_pm = new CpuCas01Model();
  50   surf_cpu_model_vm  = new CpuCas01Model();
  51
  52   cpu_define_callbacks();
  53   ModelPtr model_pm = static_cast<ModelPtr>(surf_cpu_model_pm);
  54   ModelPtr model_vm = static_cast<ModelPtr>(surf_cpu_model_vm);
  55   xbt_dynar_push(model_list, &model_pm);
  56   xbt_dynar_push(model_list, &model_vm);
  57 }
  58
  59 CpuCas01Model::CpuCas01Model() : CpuModel("cpu")
  60 {
  61   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
  62   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
  63
  64   if (!strcmp(optim, "Full")) {
  65     p_updateMechanism = UM_FULL;
  66     m_selectiveUpdate = select;
  67   } else if (!strcmp(optim, "Lazy")) {
  68     p_updateMechanism = UM_LAZY;
  69     m_selectiveUpdate = 1;
  70     xbt_assert((select == 1)
  71                ||
  72                (xbt_cfg_is_default_value
  73                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
  74                "Disabling selective update while using the lazy update mechanism is dumb!");
  75   } else {
  76     xbt_die("Unsupported optimization (%s) for this model", optim);
  77   }
  78
  79   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
  80
  81   if (getUpdateMechanism() == UM_LAZY) {
  82         shareResources = &CpuCas01Model::shareResourcesLazy;
  83         updateActionsState = &CpuCas01Model::updateActionsStateLazy;
  84
  85   } else if (getUpdateMechanism() == UM_FULL) {
  86         shareResources = &CpuCas01Model::shareResourcesFull;
  87         updateActionsState = &CpuCas01Model::updateActionsStateFull;
  88   } else
  89     xbt_die("Invalid cpu update mechanism!");
  90
  91   if (!p_maxminSystem) {
  92     p_maxminSystem = lmm_system_new(m_selectiveUpdate);
  93   }
  94
  95   if (getUpdateMechanism() == UM_LAZY) {
  96     p_actionHeap = xbt_heap_new(8, NULL);
  97     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
  98     p_modifiedSet = new ActionLmmList();
  99     p_maxminSystem->keep_track = p_modifiedSet;
 100   }
 101 }
 102
 103 CpuCas01Model::~CpuCas01Model()
 104 {
 105   lmm_system_free(p_maxminSystem);
 106   p_maxminSystem = NULL;
 107
 108   if (p_actionHeap)
 109     xbt_heap_free(p_actionHeap);
 110   delete p_modifiedSet;
 111
 112   surf_cpu_model_pm = NULL;
 113
 114   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 115 }
 116
 117 void CpuCas01Model::parseInit(sg_platf_host_cbarg_t host)
 118 {
 119   createResource(host->id,
 120         host->power_peak,
 121         host->pstate,
 122         host->power_scale,
 123         host->power_trace,
 124         host->core_amount,
 125         host->initial_state,
 126         host->state_trace,
 127         host->properties);
 128 }
 129
 130 CpuPtr CpuCas01Model::createResource(const char *name, xbt_dynar_t power_peak,
 131                                   int pstate, double power_scale,
 132                           tmgr_trace_t power_trace, int core,
 133                           e_surf_resource_state_t state_initial,
 134                           tmgr_trace_t state_trace,
 135                           xbt_dict_t cpu_properties)
 136 {
 137   CpuPtr cpu = NULL;
 138   xbt_assert(!surf_cpu_resource_priv(surf_cpu_resource_by_name(name)),
 139              "Host '%s' declared several times in the platform file",
 140              name);
 141   xbt_assert(xbt_dynar_getfirst_as(power_peak, double) > 0.0,
 142       "Power has to be >0.0");
 143   xbt_assert(core > 0, "Invalid number of cores %d", core);
 144
 145   cpu = new CpuCas01(this, name, power_peak, pstate, power_scale, power_trace, core, state_initial, state_trace, cpu_properties);
 146   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, static_cast<ResourcePtr>(cpu));
 147
 148   return cpu;
 149 }
 150
 151 double CpuCas01Model::shareResourcesFull(double /*now*/)
 152 {
 153   return Model::shareResourcesMaxMin(getRunningActionSet(),
 154                              p_maxminSystem, lmm_solve);
 155 }
 156
 157 void CpuCas01Model::addTraces()
 158 {
 159   xbt_dict_cursor_t cursor = NULL;
 160   char *trace_name, *elm;
 161   static int called = 0;
 162   if (called)
 163     return;
 164   called = 1;
 165
 166   /* connect all traces relative to hosts */
 167   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 168     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 169     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 170
 171     xbt_assert(host, "Host %s undefined", elm);
 172     xbt_assert(trace, "Trace %s undefined", trace_name);
 173
 174     host->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host));
 175   }
 176
 177   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 178     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 179     CpuCas01Ptr host = static_cast<CpuCas01Ptr>(surf_cpu_resource_priv(surf_cpu_resource_by_name(elm)));
 180
 181     xbt_assert(host, "Host %s undefined", elm);
 182     xbt_assert(trace, "Trace %s undefined", trace_name);
 183
 184     host->p_powerEvent =
 185         tmgr_history_add_trace(history, trace, 0.0, 0, static_cast<ResourcePtr>(host));
 186   }
 187 }
 188
 189 /************
 190  * Resource *
 191  ************/
 192 CpuCas01::CpuCas01(CpuCas01ModelPtr model, const char *name, xbt_dynar_t powerPeak,
 193                          int pstate, double powerScale, tmgr_trace_t powerTrace, int core,
 194                          e_surf_resource_state_t stateInitial, tmgr_trace_t stateTrace,
 195                          xbt_dict_t properties)
 196 : Cpu(model, name, properties,
 197           lmm_constraint_new(model->getMaxminSystem(), this, core * powerScale * xbt_dynar_get_as(powerPeak, pstate, double)),
 198           core, xbt_dynar_get_as(powerPeak, pstate, double), powerScale) {
 199   p_powerEvent = NULL;
 200   p_powerPeakList = powerPeak;
 201   m_pstate = pstate;
 202
 203   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_powerPeak, m_pstate);
 204
 205   m_core = core;
 206   setState(stateInitial);
 207   if (powerTrace)
 208     p_powerEvent = tmgr_history_add_trace(history, powerTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 209
 210   if (stateTrace)
 211     p_stateEvent = tmgr_history_add_trace(history, stateTrace, 0.0, 0, static_cast<ResourcePtr>(this));
 212 }
 213
 214 CpuCas01::~CpuCas01(){
 215   xbt_dynar_free(&p_powerPeakList);
 216 }
 217
 218 bool CpuCas01::isUsed()
 219 {
 220   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 221 }
 222
 223 void CpuCas01::updateState(tmgr_trace_event_t event_type, double value, double date)
 224 {
 225   lmm_variable_t var = NULL;
 226   lmm_element_t elem = NULL;
 227
 228   if (event_type == p_powerEvent) {
 229         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 230         xbt_assert(m_core == 1, "FIXME: add power scaling code also for constraint_core[i]");
 231
 232     m_powerScale = value;
 233     lmm_update_constraint_bound(surf_cpu_model_pm->getMaxminSystem(), getConstraint(),
 234                                 m_core * m_powerScale *
 235                                 m_powerPeak);
 236 #ifdef HAVE_TRACING
 237     TRACE_surf_host_set_power(date, getName(),
 238                               m_core * m_powerScale *
 239                               m_powerPeak);
 240 #endif
 241     while ((var = lmm_get_var_from_cnst
 242             (surf_cpu_model_pm->getMaxminSystem(), getConstraint(), &elem))) {
 243       CpuCas01ActionPtr action = static_cast<CpuCas01ActionPtr>(static_cast<ActionPtr>(lmm_variable_id(var)));
 244
 245       lmm_update_variable_bound(surf_cpu_model_pm->getMaxminSystem(),
 246                                 action->getVariable(),
 247                                 m_powerScale * m_powerPeak);
 248     }
 249     if (tmgr_trace_event_free(event_type))
 250       p_powerEvent = NULL;
 251   } else if (event_type == p_stateEvent) {
 252         /* TODO (Hypervisor): do the same thing for constraint_core[i] */
 253     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
 254
 255     if (value > 0) {
 256       if(getState() == SURF_RESOURCE_OFF)
 257         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
 258       setState(SURF_RESOURCE_ON);
 259     } else {
 260       lmm_constraint_t cnst = getConstraint();
 261
 262       setState(SURF_RESOURCE_OFF);
 263
 264       while ((var = lmm_get_var_from_cnst(surf_cpu_model_pm->getMaxminSystem(), cnst, &elem))) {
 265         ActionPtr action = static_cast<ActionPtr>(lmm_variable_id(var));
 266
 267         if (action->getState() == SURF_ACTION_RUNNING ||
 268             action->getState() == SURF_ACTION_READY ||
 269             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
 270           action->setFinishTime(date);
 271           action->setState(SURF_ACTION_FAILED);
 272         }
 273       }
 274     }
 275     if (tmgr_trace_event_free(event_type))
 276       p_stateEvent = NULL;
 277   } else {
 278     XBT_CRITICAL("Unknown event ! \n");
 279     xbt_abort();
 280   }
 281
 282   return;
 283 }
 284
 285 CpuActionPtr CpuCas01::execute(double size)
 286 {
 287
 288   XBT_IN("(%s,%g)", getName(), size);
 289   CpuCas01ActionPtr action = new CpuCas01Action(surf_cpu_model_pm, size, getState() != SURF_RESOURCE_ON,
 290                                                               m_powerScale * m_powerPeak, getConstraint());
 291
 292   XBT_OUT();
 293   return action;
 294 }
 295
 296 CpuActionPtr CpuCas01::sleep(double duration)
 297 {
 298   if (duration > 0)
 299     duration = MAX(duration, MAXMIN_PRECISION);
 300
 301   XBT_IN("(%s,%g)", getName(), duration);
 302   CpuCas01ActionPtr action = new CpuCas01Action(surf_cpu_model_pm, 1.0, getState() != SURF_RESOURCE_ON,
 303                                                       m_powerScale * m_powerPeak, getConstraint());
 304
 305
 306   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 307   action->m_maxDuration = duration;
 308   action->m_suspended = 2;
 309   if (duration == NO_MAX_DURATION) {
 310     /* Move to the *end* of the corresponding action set. This convention
 311        is used to speed up update_resource_state  */
 312         action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
 313     action->p_stateSet = static_cast<CpuCas01ModelPtr>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
 314     action->getStateSet()->push_back(*action);
 315   }
 316
 317   lmm_update_variable_weight(surf_cpu_model_pm->getMaxminSystem(),
 318                              action->getVariable(), 0.0);
 319   if (surf_cpu_model_pm->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
 320     action->heapRemove(surf_cpu_model_pm->getActionHeap());
 321     // this is necessary for a variable with weight 0 since such
 322     // variables are ignored in lmm and we need to set its max_duration
 323     // correctly at the next call to share_resources
 324     surf_cpu_model_pm->getModifiedSet()->push_front(*action);
 325   }
 326
 327   XBT_OUT();
 328   return action;
 329 }
 330
 331 double CpuCas01::getCurrentPowerPeak()
 332 {
 333   return m_powerPeak;
 334 }
 335
 336 double CpuCas01::getPowerPeakAt(int pstate_index)
 337 {
 338   xbt_dynar_t plist = p_powerPeakList;
 339   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 340
 341   return xbt_dynar_get_as(plist, pstate_index, double);
 342 }
 343
 344 int CpuCas01::getNbPstates()
 345 {
 346   return xbt_dynar_length(p_powerPeakList);
 347 }
 348
 349 void CpuCas01::setPowerPeakAt(int pstate_index)
 350 {
 351   xbt_dynar_t plist = p_powerPeakList;
 352   xbt_assert((pstate_index <= (int)xbt_dynar_length(plist)), "Invalid parameters (pstate index out of bounds)");
 353
 354   double new_power_peak = xbt_dynar_get_as(plist, pstate_index, double);
 355   m_pstate = pstate_index;
 356   m_powerPeak = new_power_peak;
 357 }
 358
 359 /**********
 360  * Action *
 361  **********/
 362
 363 CpuCas01Action::CpuCas01Action(ModelPtr model, double cost, bool failed, double power, lmm_constraint_t constraint)
 364  : CpuAction(model, cost, failed,
 365                      lmm_variable_new(model->getMaxminSystem(), static_cast<ActionPtr>(this),
 366                      1.0, power, 1))
 367 {
 368   m_suspended = 0;     /* Should be useless because of the
 369                                                            calloc but it seems to help valgrind... */
 370
 371   if (model->getUpdateMechanism() == UM_LAZY) {
 372     m_indexHeap = -1;
 373     m_lastUpdate = surf_get_clock();
 374     m_lastValue = 0.0;
 375   }
 376   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
 377 }